Questions? Email us at store@projectweekenddiy.com
Zinsser Peel Stop Triple Thick is a high-build, water-based acrylic binding primer that locks down peeling paint and seals cracked, worn and weathered surfaces. Zinsser says it goes on three times thicker than regular primers and can be applied up to 30 mils wet per coat, so it fills and seals cracks and leaves a smoother, more uniform base for paint. It dries white and can be painted with any latex or alkyd paint in 2 hours. Apply it between 40 and 90 F. This is the quart, which covers about 12 to 50 sq ft from Zinsser's 50 to 200 sq ft per gallon. It also comes in a gallon here.
| Base | Water-based acrylic |
|---|---|
| Color | White |
| Size | Quart (Zinsser part 260925) |
| Coverage | 50 to 200 sq ft per gallon, depending on application and surface porosity |
| Dry time at 70 to 80 F, 50% RH | Touch 30 minutes; prime or paint in 2 hours |
| Apply at | 40 to 90 F air, material and surface, surface at least 5 F above dew point, humidity 85% or less |
| VOC | Under 100 g/L (0.83 lb/gal) |
| Topcoat | Any latex or alkyd paint |
| Cleanup | Soap and warm water |
| Source | Zinsser TDS PST-01, rev 08/26/24 |
| Peel Stop Triple Thick (this primer) | Regular Peel Stop (Clear Binding Sealer) | |
|---|---|---|
| Dries | White | Clear, with a slight sheen |
| Film | High build, up to 30 mils wet per coat | Penetrates and binds chalky residue |
| On cracked paint | Thick coats bridge and fill cracked, uneven surfaces | Seals face checking and glues down cracks under old paint edges |
| Coverage per gallon | 50 to 200 sq ft | 300 to 400 sq ft |
| Apply at | 40 to 90 F | 50 to 90 F |
| VOC | Under 100 g/L | Under 60 g/L |
| Topcoat | Any latex or alkyd paint, after 2 hours | Any latex or alkyd paint, after 2 hours |
| We sell | Quart (this page), gallon | Quart, gallon |
Source: Zinsser TDS PST-01 (Triple Thick, rev 08/26/24) and PST-02 (Clear Binding Sealer, rev 12/10/21).
Both are Zinsser water-based binding primers that glue down peeling paint and take any latex or alkyd topcoat. Regular Peel Stop (Zinsser Peel Stop Clear Binding Sealer) goes on clear, soaks into chalky and peeling paint, and covers 300 to 400 sq ft per gallon. Triple Thick dries white and builds up to 30 mils wet per coat to fill cracks and smooth weathered paint, so it covers 50 to 200 sq ft per gallon. We sell regular Peel Stop in quart and gallon.
Zinsser makes it in quart (260925), gallon (260924) and 5-gallon (260927). We sell this quart and the gallon.
Zinsser rates it at 50 to 200 sq ft per gallon, depending on how thick you apply it and how porous the surface is. That works out to about 12 to 50 sq ft per quart. Thick coats to fill cracks land at the low end.
Zinsser says it dries to the touch in 30 minutes and can be painted in 2 hours at 70 to 80 F and 50 percent humidity. Rust-Oleum adds that a full 30 mil wet coat can take 3 hours to dry to the touch and 6 hours before recoating. Apply it only when air, material and surface are between 40 and 90 F, the surface is at least 5 F above the dew point, and humidity is 85 percent or less. Outdoors, do not apply if rain is expected within 8 hours.
No. Zinsser says to use a stain-blocking primer such as Cover-Stain or B-I-N over water stains or bleeding woods. Peel Stop Triple Thick is for binding peeling paint and building a smooth surface.
No. Zinsser says it is not a substitute for wood filler, caulk or drywall mud, and it is not for floors, decks, surfaces under water or below grade, or polyethylene, polypropylene, Teflon or nylon.
Scrape off loose paint first. For severely peeled surfaces Zinsser says to thin the first coat with 10 percent water and work it into the peeling paint, then follow with full coats up to 30 mils wet. Zinsser says one coat primes most surfaces.
Compare every Zinsser binding, bonding and stain-blocking primer on primers and sealers, or shop all Zinsser.
Documents are published by Zinsser. Always follow the label and SDS.
Free standard shipping on orders $75+ to the lower 48 states and DC. Some large or heavy items are excluded at checkout.
30-day returns on unused, unopened items. Returns accepted within 30 days. We send you a prepaid return label. Contact us within 30 days of delivery to start a return. Opened paint, aerosols, flammables, special orders and sale items can't be returned. Read the full refund policy.
Use this product page for the exact item, then check the Weekend Project Carts for prep, applicators, patch, cleanup, and finishing supplies. If you are still choosing a method, start with the Project Guides before adding everything to cart.
